Valve-extractor



E. T. LIESS.

VALVE EXTRACTOR.

APPLICATION FILED OCT. 29. 1919.

1,350, 163. I Patented Aug. 17,1920.

INVENTOR jmdfl an mowers UNITED STATES PATENT OFFICE.

EDWARD 'I. LIESS, F HUNTINGTON, NEW YORK.

VALVE-EXTRAGTOR.

Specification of Letters Patent. p te tmt Aug, .7, 2

Application filed October 29. 1919.. Serial No. 334.245.

proved Valve-Extractor, of which the following is a full, clear, and exact description. This 1nvent1on relates to valve mechanisms and has reference more particularly to a device adapted for the extraction of valves from an internal combustion engine.

An ob ect of thls lnvention is to provide a device for removing the valves from an internal combustion engine which can be cheaply constructed and will be easy to apply.

Reference is had to the accompanying drawing forming part of this specification, in which it is understood that the drawing is merely illustrative of one example of the invention, and in which Figure 1 is an elevation of an internal combustion engine with a part'broken away to show the improved valve extractor in operative position.

Fig. 2 is a side elevation tractor.

Fig. 3 is a section through Fig. 2 on the of the valve ex- 7 line 3--3.

Fig. & is a top view of the device.

Referring to the accompanying drawings by numerals, 10 indicates an internal combustion engine gine having valve stems 12 are seated in bearings 13 and are reciprocated vertically by means of valve'tappets 14, which reciprocate vertically in bearings 15. The valve tappets 14 may be adjusted as to length by means of bolts .16 screwed in the ends. The heads 17 of said bolts form seats for the valve stems 12. The tappets 14: and the valve stems 12 stem under the action of the spring by en shown as an automobile ena plurality of valves 11, whose means of a pin 22 which passes laterally through the. valve stem.

In order to allow the easy removal of the valve 11, I provide a collar 23 having a depending annular flange 2 1, said collar being mounted on the bearing 13 between the end of the spring 20 and the frame of the-engine 10. At each side of the collar.

23 is formed a hinge 25 to which is pivoted by means of a hinge pin 26, an arm 27 having a laterally extending finger 28 at its lower end. These arms 27 are curved in cross section as shown in Fig. 3,'and are of such length that when the cam 18 is raised to its highest point, the fingers 28 will just slip under and grip the washer 21 so'that as the cam 18 is rotated to some lower position, the pin 22 will be freed from the tension of the spring and can be easily extracted, thus allowing the valve 11 and the valve stem 12 to be removed or to be rotated when it is desired to grind in or clean a valve. When the valve stem 12 is removed the spring, washer, and extractor cling together and can be handled as a unit and removed from the engine ifso desired. The hinges 25 form a very close fit around the hinge pin 26, so that when the arms are placed in any one position, they will remain in that position regardless of jars or knocks occurring in the hus when the two arms are spread apart as shown in the right hand valve of Fig. 1, the washer 21 and the valve stem 12 are free to reciprocate vertically, as the engine operates without engagin the fingers 28. The valve on the left in Fig. 1 shows the arms 27 pressed together manually to grip thewasher 21. The collars are adapted to remain on the engine constantly while it is in operation, and the collars may be turned so the arms of the different collars stand at different relative positions, so that said arms will not interfere with each other.

The'device may be made of any suitable material, but I prefer to use a high grade steel which may be made very light and strong.

I would state in conclusion, while the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictly to the mechanical details herein illustrated, since manifestly the same can be considerably varied without depar Having thus described my invention, I

claim as new and desire to secure by Letters Patent In a valve extractor, a rigid collar adapted to be permanently positioned around a valve stem'between a valve spring and itsseat, plurality of arms hinged at one end around the periphery'of said collar, and a transverse finger formed on the end of each arm opposite the hinge adapted to engage the spring Washer and hold the spring-in compression after the compressive force is removed.

EDWARD T. LIESS. 

